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Finding the Fourth Proportional to 869,879,368.80, 1,304,819,053.20 and 482,895,842.40

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Solution

The fourth proportional to 869,879,368.80, 1,304,819,053.20 and 482,895,842.40 is: 724,343,763.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,879,368.80 : 1,304,819,053.20 = 482,895,842.40 : x
  2. Step 2: Convert to fraction form
    869,879,368.80/1,304,819,053.20 = 482,895,842.40/x
  3. Step 3: Cross multiply
    869,879,368.80x = 1,304,819,053.20 × 482,895,842.40
  4. Step 4: Simplify right side
    869,879,368.80x = 630,091,695,874,584,448
  5. Step 5: Solve for x
    x = 630,091,695,874,584,448/869,879,368.80
  6. Step 6: Final answer
    x = 724,343,763.60

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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.