Home / 890,710,909.30-1,336,402,287.15-431,055,997.30

Finding the Fourth Proportional to 890,710,909.30, 1,336,402,287.15 and 431,055,997.30

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Solution

The fourth proportional to 890,710,909.30, 1,336,402,287.15 and 431,055,997.30 is: 646,746,564.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,710,909.30 : 1,336,402,287.15 = 431,055,997.30 : x
  2. Step 2: Convert to fraction form
    890,710,909.30/1,336,402,287.15 = 431,055,997.30/x
  3. Step 3: Cross multiply
    890,710,909.30x = 1,336,402,287.15 × 431,055,997.30
  4. Step 4: Simplify right side
    890,710,909.30x = 576,064,220,681,444,288
  5. Step 5: Solve for x
    x = 576,064,220,681,444,288/890,710,909.30
  6. Step 6: Final answer
    x = 646,746,564.64

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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.