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Finding the Fourth Proportional to 885,736,031.60, 1,328,604,047.40 and 870,430,530.80

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Solution

The fourth proportional to 885,736,031.60, 1,328,604,047.40 and 870,430,530.80 is: 1,305,645,796.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,736,031.60 : 1,328,604,047.40 = 870,430,530.80 : x
  2. Step 2: Convert to fraction form
    885,736,031.60/1,328,604,047.40 = 870,430,530.80/x
  3. Step 3: Cross multiply
    885,736,031.60x = 1,328,604,047.40 × 870,430,530.80
  4. Step 4: Simplify right side
    885,736,031.60x = 1,156,457,526,201,410,304
  5. Step 5: Solve for x
    x = 1,156,457,526,201,410,304/885,736,031.60
  6. Step 6: Final answer
    x = 1,305,645,796.20

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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.