Home / 559,876,979.20-839,815,468.80-405,688,230.40

Finding the Fourth Proportional to 559,876,979.20, 839,815,468.80 and 405,688,230.40

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Solution

The fourth proportional to 559,876,979.20, 839,815,468.80 and 405,688,230.40 is: 608,532,345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,876,979.20 : 839,815,468.80 = 405,688,230.40 : x
  2. Step 2: Convert to fraction form
    559,876,979.20/839,815,468.80 = 405,688,230.40/x
  3. Step 3: Cross multiply
    559,876,979.20x = 839,815,468.80 × 405,688,230.40
  4. Step 4: Simplify right side
    559,876,979.20x = 340,703,251,400,018,368
  5. Step 5: Solve for x
    x = 340,703,251,400,018,368/559,876,979.20
  6. Step 6: Final answer
    x = 608,532,345.60

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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.