Home / 781,245,790.85-1,078,120,258.98-424,013,572.98

Finding the Fourth Proportional to 781,245,790.85, 1,078,120,258.98 and 424,013,572.98

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Solution

The fourth proportional to 781,245,790.85, 1,078,120,258.98 and 424,013,572.98 is: 585,139,310.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,245,790.85 : 1,078,120,258.98 = 424,013,572.98 : x
  2. Step 2: Convert to fraction form
    781,245,790.85/1,078,120,258.98 = 424,013,572.98/x
  3. Step 3: Cross multiply
    781,245,790.85x = 1,078,120,258.98 × 424,013,572.98
  4. Step 4: Simplify right side
    781,245,790.85x = 457,137,623,112,232,768
  5. Step 5: Solve for x
    x = 457,137,623,112,232,768/781,245,790.85
  6. Step 6: Final answer
    x = 585,139,310.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.