Home / 425,495,864.40-638,264,791.80-221,422,520.40

Finding the Fourth Proportional to 425,495,864.40, 638,264,791.80 and 221,422,520.40

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Solution

The fourth proportional to 425,495,864.40, 638,264,791.80 and 221,422,520.40 is: 332,144,706.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,495,864.40 : 638,264,791.80 = 221,422,520.40 : x
  2. Step 2: Convert to fraction form
    425,495,864.40/638,264,791.80 = 221,422,520.40/x
  3. Step 3: Cross multiply
    425,495,864.40x = 638,264,791.80 × 221,422,520.40
  4. Step 4: Simplify right side
    425,495,864.40x = 141,326,198,882,937,248
  5. Step 5: Solve for x
    x = 141,326,198,882,937,248/425,495,864.40
  6. Step 6: Final answer
    x = 332,144,706.23

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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.