Home / 1,216,428,038.16-1,678,706,105.34-687,780,674.02

Finding the Fourth Proportional to 1,216,428,038.16, 1,678,706,105.34 and 687,780,674.02

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Solution

The fourth proportional to 1,216,428,038.16, 1,678,706,105.34 and 687,780,674.02 is: 949,157,352.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,428,038.16 : 1,678,706,105.34 = 687,780,674.02 : x
  2. Step 2: Convert to fraction form
    1,216,428,038.16/1,678,706,105.34 = 687,780,674.02/x
  3. Step 3: Cross multiply
    1,216,428,038.16x = 1,678,706,105.34 × 687,780,674.02
  4. Step 4: Simplify right side
    1,216,428,038.16x = 1,154,581,616,612,234,240
  5. Step 5: Solve for x
    x = 1,154,581,616,612,234,240/1,216,428,038.16
  6. Step 6: Final answer
    x = 949,157,352.84

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Double scale
Find fourth proportional to 1,216,428,039.16, 1,678,706,106.72 and 687,780,675.02
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.