Home / 286,264,640.72-429,396,895.47-81,792,718.40

Finding the Fourth Proportional to 286,264,640.72, 429,396,895.47 and 81,792,718.40

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Solution

The fourth proportional to 286,264,640.72, 429,396,895.47 and 81,792,718.40 is: 122,689,058.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,264,640.72 : 429,396,895.47 = 81,792,718.40 : x
  2. Step 2: Convert to fraction form
    286,264,640.72/429,396,895.47 = 81,792,718.40/x
  3. Step 3: Cross multiply
    286,264,640.72x = 429,396,895.47 × 81,792,718.40
  4. Step 4: Simplify right side
    286,264,640.72x = 35,121,539,353,011,952
  5. Step 5: Solve for x
    x = 35,121,539,353,011,952/286,264,640.72
  6. Step 6: Final answer
    x = 122,689,058.85

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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.