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Finding the Fourth Proportional to 885,736,006.20, 1,328,604,009.30 and 838,384,613.12

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Solution

The fourth proportional to 885,736,006.20, 1,328,604,009.30 and 838,384,613.12 is: 1,257,576,919.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,736,006.20 : 1,328,604,009.30 = 838,384,613.12 : x
  2. Step 2: Convert to fraction form
    885,736,006.20/1,328,604,009.30 = 838,384,613.12/x
  3. Step 3: Cross multiply
    885,736,006.20x = 1,328,604,009.30 × 838,384,613.12
  4. Step 4: Simplify right side
    885,736,006.20x = 1,113,881,158,326,661,376
  5. Step 5: Solve for x
    x = 1,113,881,158,326,661,376/885,736,006.20
  6. Step 6: Final answer
    x = 1,257,576,919.68

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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.