Home / 781,816,661.32-1,172,464,580.76-315,357,608.20

Finding the Fourth Proportional to 781,816,661.32, 1,172,464,580.76 and 315,357,608.20

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Solution

The fourth proportional to 781,816,661.32, 1,172,464,580.76 and 315,357,608.20 is: 472,931,371.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,816,661.32 : 1,172,464,580.76 = 315,357,608.20 : x
  2. Step 2: Convert to fraction form
    781,816,661.32/1,172,464,580.76 = 315,357,608.20/x
  3. Step 3: Cross multiply
    781,816,661.32x = 1,172,464,580.76 × 315,357,608.20
  4. Step 4: Simplify right side
    781,816,661.32x = 369,745,625,887,689,344
  5. Step 5: Solve for x
    x = 369,745,625,887,689,344/781,816,661.32
  6. Step 6: Final answer
    x = 472,931,371.48

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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.