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Finding the Fourth Proportional to 885,736,810.10, 1,328,605,215.15 and 639,573,338.90

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Solution

The fourth proportional to 885,736,810.10, 1,328,605,215.15 and 639,573,338.90 is: 959,360,008.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,736,810.10 : 1,328,605,215.15 = 639,573,338.90 : x
  2. Step 2: Convert to fraction form
    885,736,810.10/1,328,605,215.15 = 639,573,338.90/x
  3. Step 3: Cross multiply
    885,736,810.10x = 1,328,605,215.15 × 639,573,338.90
  4. Step 4: Simplify right side
    885,736,810.10x = 849,740,473,533,438,336
  5. Step 5: Solve for x
    x = 849,740,473,533,438,336/885,736,810.10
  6. Step 6: Final answer
    x = 959,360,008.35

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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.