Home / 745,929.36-1,029,407.40-406,429.20

Finding the Fourth Proportional to 745,929.36, 1,029,407.40 and 406,429.20

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Solution

The fourth proportional to 745,929.36, 1,029,407.40 and 406,429.20 is: 560,885.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,929.36 : 1,029,407.40 = 406,429.20 : x
  2. Step 2: Convert to fraction form
    745,929.36/1,029,407.40 = 406,429.20/x
  3. Step 3: Cross multiply
    745,929.36x = 1,029,407.40 × 406,429.20
  4. Step 4: Simplify right side
    745,929.36x = 418,381,226,056.08
  5. Step 5: Solve for x
    x = 418,381,226,056.08/745,929.36
  6. Step 6: Final answer
    x = 560,885.85

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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.