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Finding the Fourth Proportional to 605,323,600.20, 907,985,400.30 and 398,699,339.40

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Solution

The fourth proportional to 605,323,600.20, 907,985,400.30 and 398,699,339.40 is: 598,049,009.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,323,600.20 : 907,985,400.30 = 398,699,339.40 : x
  2. Step 2: Convert to fraction form
    605,323,600.20/907,985,400.30 = 398,699,339.40/x
  3. Step 3: Cross multiply
    605,323,600.20x = 907,985,400.30 × 398,699,339.40
  4. Step 4: Simplify right side
    605,323,600.20x = 362,013,179,284,454,528
  5. Step 5: Solve for x
    x = 362,013,179,284,454,528/605,323,600.20
  6. Step 6: Final answer
    x = 598,049,009.10

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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.