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Finding the Fourth Proportional to 890,710,895.30, 1,336,402,266.15 and 431,055,983.30

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Solution

The fourth proportional to 890,710,895.30, 1,336,402,266.15 and 431,055,983.30 is: 646,746,543.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,710,895.30 : 1,336,402,266.15 = 431,055,983.30 : x
  2. Step 2: Convert to fraction form
    890,710,895.30/1,336,402,266.15 = 431,055,983.30/x
  3. Step 3: Cross multiply
    890,710,895.30x = 1,336,402,266.15 × 431,055,983.30
  4. Step 4: Simplify right side
    890,710,895.30x = 576,064,192,919,636,608
  5. Step 5: Solve for x
    x = 576,064,192,919,636,608/890,710,895.30
  6. Step 6: Final answer
    x = 646,746,543.64

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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.