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Finding the Fourth Proportional to 659,897,205.60, 989,845,808.40 and 649,693,538.40

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Solution

The fourth proportional to 659,897,205.60, 989,845,808.40 and 649,693,538.40 is: 974,540,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,897,205.60 : 989,845,808.40 = 649,693,538.40 : x
  2. Step 2: Convert to fraction form
    659,897,205.60/989,845,808.40 = 649,693,538.40/x
  3. Step 3: Cross multiply
    659,897,205.60x = 989,845,808.40 × 649,693,538.40
  4. Step 4: Simplify right side
    659,897,205.60x = 643,096,425,729,804,416
  5. Step 5: Solve for x
    x = 643,096,425,729,804,416/659,897,205.60
  6. Step 6: Final answer
    x = 974,540,307.60

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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.