Home / 656,291,346.12-905,680,030.95-354,874,548.02

Finding the Fourth Proportional to 656,291,346.12, 905,680,030.95 and 354,874,548.02

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Solution

The fourth proportional to 656,291,346.12, 905,680,030.95 and 354,874,548.02 is: 489,725,780.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,291,346.12 : 905,680,030.95 = 354,874,548.02 : x
  2. Step 2: Convert to fraction form
    656,291,346.12/905,680,030.95 = 354,874,548.02/x
  3. Step 3: Cross multiply
    656,291,346.12x = 905,680,030.95 × 354,874,548.02
  4. Step 4: Simplify right side
    656,291,346.12x = 321,402,791,629,592,448
  5. Step 5: Solve for x
    x = 321,402,791,629,592,448/656,291,346.12
  6. Step 6: Final answer
    x = 489,725,780.37

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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.