Home / 520,960,015.80-781,440,023.70-491,232,886.20

Finding the Fourth Proportional to 520,960,015.80, 781,440,023.70 and 491,232,886.20

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Solution

The fourth proportional to 520,960,015.80, 781,440,023.70 and 491,232,886.20 is: 736,849,329.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,960,015.80 : 781,440,023.70 = 491,232,886.20 : x
  2. Step 2: Convert to fraction form
    520,960,015.80/781,440,023.70 = 491,232,886.20/x
  3. Step 3: Cross multiply
    520,960,015.80x = 781,440,023.70 × 491,232,886.20
  4. Step 4: Simplify right side
    520,960,015.80x = 383,869,038,234,347,392
  5. Step 5: Solve for x
    x = 383,869,038,234,347,392/520,960,015.80
  6. Step 6: Final answer
    x = 736,849,329.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.