Home / 1,109,021,718.42-1,663,787,702.10-372,189,400.74

Finding the Fourth Proportional to 1,109,021,718.42, 1,663,787,702.10 and 372,189,400.74

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Solution

The fourth proportional to 1,109,021,718.42, 1,663,787,702.10 and 372,189,400.74 is: 558,369,721.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,021,718.42 : 1,663,787,702.10 = 372,189,400.74 : x
  2. Step 2: Convert to fraction form
    1,109,021,718.42/1,663,787,702.10 = 372,189,400.74/x
  3. Step 3: Cross multiply
    1,109,021,718.42x = 1,663,787,702.10 × 372,189,400.74
  4. Step 4: Simplify right side
    1,109,021,718.42x = 619,244,147,803,180,672
  5. Step 5: Solve for x
    x = 619,244,147,803,180,672/1,109,021,718.42
  6. Step 6: Final answer
    x = 558,369,721.28

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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.