Home / 860,139.88-1,187,148.18-497,513.32

Finding the Fourth Proportional to 860,139.88, 1,187,148.18 and 497,513.32

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Solution

The fourth proportional to 860,139.88, 1,187,148.18 and 497,513.32 is: 686,658.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,139.88 : 1,187,148.18 = 497,513.32 : x
  2. Step 2: Convert to fraction form
    860,139.88/1,187,148.18 = 497,513.32/x
  3. Step 3: Cross multiply
    860,139.88x = 1,187,148.18 × 497,513.32
  4. Step 4: Simplify right side
    860,139.88x = 590,622,032,363.76
  5. Step 5: Solve for x
    x = 590,622,032,363.76/860,139.88
  6. Step 6: Final answer
    x = 686,658.12

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Double scale
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1.5x scale

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.