Home / 915,519.38-1,263,547.49-507,711.92

Finding the Fourth Proportional to 915,519.38, 1,263,547.49 and 507,711.92

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Solution

The fourth proportional to 915,519.38, 1,263,547.49 and 507,711.92 is: 700,714.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,519.38 : 1,263,547.49 = 507,711.92 : x
  2. Step 2: Convert to fraction form
    915,519.38/1,263,547.49 = 507,711.92/x
  3. Step 3: Cross multiply
    915,519.38x = 1,263,547.49 × 507,711.92
  4. Step 4: Simplify right side
    915,519.38x = 641,518,122,159.08
  5. Step 5: Solve for x
    x = 641,518,122,159.08/915,519.38
  6. Step 6: Final answer
    x = 700,714.96

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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.