Home / 989,491.80-1,484,237.70-358,426.20

Finding the Fourth Proportional to 989,491.80, 1,484,237.70 and 358,426.20

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Solution

The fourth proportional to 989,491.80, 1,484,237.70 and 358,426.20 is: 537,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,491.80 : 1,484,237.70 = 358,426.20 : x
  2. Step 2: Convert to fraction form
    989,491.80/1,484,237.70 = 358,426.20/x
  3. Step 3: Cross multiply
    989,491.80x = 1,484,237.70 × 358,426.20
  4. Step 4: Simplify right side
    989,491.80x = 531,989,678,707.74
  5. Step 5: Solve for x
    x = 531,989,678,707.74/989,491.80
  6. Step 6: Final answer
    x = 537,639.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.