Home / 746,010.10-1,119,345.87-390,939.70

Finding the Fourth Proportional to 746,010.10, 1,119,345.87 and 390,939.70

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Solution

The fourth proportional to 746,010.10, 1,119,345.87 and 390,939.70 is: 586,582.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,010.10 : 1,119,345.87 = 390,939.70 : x
  2. Step 2: Convert to fraction form
    746,010.10/1,119,345.87 = 390,939.70/x
  3. Step 3: Cross multiply
    746,010.10x = 1,119,345.87 × 390,939.70
  4. Step 4: Simplify right side
    746,010.10x = 437,596,738,614.04
  5. Step 5: Solve for x
    x = 437,596,738,614.04/746,010.10
  6. Step 6: Final answer
    x = 586,582.86

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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.