Home / 700,985.60-967,411.18-390,909.16

Finding the Fourth Proportional to 700,985.60, 967,411.18 and 390,909.16

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Solution

The fourth proportional to 700,985.60, 967,411.18 and 390,909.16 is: 539,483.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,985.60 : 967,411.18 = 390,909.16 : x
  2. Step 2: Convert to fraction form
    700,985.60/967,411.18 = 390,909.16/x
  3. Step 3: Cross multiply
    700,985.60x = 967,411.18 × 390,909.16
  4. Step 4: Simplify right side
    700,985.60x = 378,169,891,748.41
  5. Step 5: Solve for x
    x = 378,169,891,748.41/700,985.60
  6. Step 6: Final answer
    x = 539,483.11

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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.