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Finding the Fourth Proportional to 706,729.95, 975,282.51 and 400,865.85

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Solution

The fourth proportional to 706,729.95, 975,282.51 and 400,865.85 is: 553,192.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,729.95 : 975,282.51 = 400,865.85 : x
  2. Step 2: Convert to fraction form
    706,729.95/975,282.51 = 400,865.85/x
  3. Step 3: Cross multiply
    706,729.95x = 975,282.51 × 400,865.85
  4. Step 4: Simplify right side
    706,729.95x = 390,957,452,361.28
  5. Step 5: Solve for x
    x = 390,957,452,361.28/706,729.95
  6. Step 6: Final answer
    x = 553,192.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.