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Finding the Fourth Proportional to 431,676,401.60, 647,514,602.40 and 302,429,950.40

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Solution

The fourth proportional to 431,676,401.60, 647,514,602.40 and 302,429,950.40 is: 453,644,925.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,676,401.60 : 647,514,602.40 = 302,429,950.40 : x
  2. Step 2: Convert to fraction form
    431,676,401.60/647,514,602.40 = 302,429,950.40/x
  3. Step 3: Cross multiply
    431,676,401.60x = 647,514,602.40 × 302,429,950.40
  4. Step 4: Simplify right side
    431,676,401.60x = 195,827,809,087,107,712
  5. Step 5: Solve for x
    x = 195,827,809,087,107,712/431,676,401.60
  6. Step 6: Final answer
    x = 453,644,925.60

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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.