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Finding the Fourth Proportional to 660,574.84, 911,595.02 and 388,652.98

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Solution

The fourth proportional to 660,574.84, 911,595.02 and 388,652.98 is: 536,342.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,574.84 : 911,595.02 = 388,652.98 : x
  2. Step 2: Convert to fraction form
    660,574.84/911,595.02 = 388,652.98/x
  3. Step 3: Cross multiply
    660,574.84x = 911,595.02 × 388,652.98
  4. Step 4: Simplify right side
    660,574.84x = 354,294,121,076.16
  5. Step 5: Solve for x
    x = 354,294,121,076.16/660,574.84
  6. Step 6: Final answer
    x = 536,342.14

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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.