Home / 781,819,624.48-1,172,469,018.48-315,360,574.24

Finding the Fourth Proportional to 781,819,624.48, 1,172,469,018.48 and 315,360,574.24

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Solution

The fourth proportional to 781,819,624.48, 1,172,469,018.48 and 315,360,574.24 is: 472,935,817.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,819,624.48 : 1,172,469,018.48 = 315,360,574.24 : x
  2. Step 2: Convert to fraction form
    781,819,624.48/1,172,469,018.48 = 315,360,574.24/x
  3. Step 3: Cross multiply
    781,819,624.48x = 1,172,469,018.48 × 315,360,574.24
  4. Step 4: Simplify right side
    781,819,624.48x = 369,750,502,946,462,016
  5. Step 5: Solve for x
    x = 369,750,502,946,462,016/781,819,624.48
  6. Step 6: Final answer
    x = 472,935,817.12

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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.