Home / 429,031,875.16-643,553,791.44-122,323,988.04

Finding the Fourth Proportional to 429,031,875.16, 643,553,791.44 and 122,323,988.04

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Solution

The fourth proportional to 429,031,875.16, 643,553,791.44 and 122,323,988.04 is: 183,487,686.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,031,875.16 : 643,553,791.44 = 122,323,988.04 : x
  2. Step 2: Convert to fraction form
    429,031,875.16/643,553,791.44 = 122,323,988.04/x
  3. Step 3: Cross multiply
    429,031,875.16x = 643,553,791.44 × 122,323,988.04
  4. Step 4: Simplify right side
    429,031,875.16x = 78,722,066,287,203,232
  5. Step 5: Solve for x
    x = 78,722,066,287,203,232/429,031,875.16
  6. Step 6: Final answer
    x = 183,487,686.68

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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.