Home / 729,412.24-1,006,547.92-407,143.12

Finding the Fourth Proportional to 729,412.24, 1,006,547.92 and 407,143.12

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Solution

The fourth proportional to 729,412.24, 1,006,547.92 and 407,143.12 is: 561,834.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,412.24 : 1,006,547.92 = 407,143.12 : x
  2. Step 2: Convert to fraction form
    729,412.24/1,006,547.92 = 407,143.12/x
  3. Step 3: Cross multiply
    729,412.24x = 1,006,547.92 × 407,143.12
  4. Step 4: Simplify right side
    729,412.24x = 409,809,060,578.31
  5. Step 5: Solve for x
    x = 409,809,060,578.31/729,412.24
  6. Step 6: Final answer
    x = 561,834.64

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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.