Home / 696,864.59-961,581.07-390,929.26

Finding the Fourth Proportional to 696,864.59, 961,581.07 and 390,929.26

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Solution

The fourth proportional to 696,864.59, 961,581.07 and 390,929.26 is: 539,430.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,864.59 : 961,581.07 = 390,929.26 : x
  2. Step 2: Convert to fraction form
    696,864.59/961,581.07 = 390,929.26/x
  3. Step 3: Cross multiply
    696,864.59x = 961,581.07 × 390,929.26
  4. Step 4: Simplify right side
    696,864.59x = 375,910,176,125.11
  5. Step 5: Solve for x
    x = 375,910,176,125.11/696,864.59
  6. Step 6: Final answer
    x = 539,430.73

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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.