Home / 478,977,105.60-718,465,658.40-430,509,686.40

Finding the Fourth Proportional to 478,977,105.60, 718,465,658.40 and 430,509,686.40

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Solution

The fourth proportional to 478,977,105.60, 718,465,658.40 and 430,509,686.40 is: 645,764,529.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,977,105.60 : 718,465,658.40 = 430,509,686.40 : x
  2. Step 2: Convert to fraction form
    478,977,105.60/718,465,658.40 = 430,509,686.40/x
  3. Step 3: Cross multiply
    478,977,105.60x = 718,465,658.40 × 430,509,686.40
  4. Step 4: Simplify right side
    478,977,105.60x = 309,306,425,286,953,472
  5. Step 5: Solve for x
    x = 309,306,425,286,953,472/478,977,105.60
  6. Step 6: Final answer
    x = 645,764,529.60

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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.