Home / 860,855.30-1,291,282.95-577,420.10

Finding the Fourth Proportional to 860,855.30, 1,291,282.95 and 577,420.10

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Solution

The fourth proportional to 860,855.30, 1,291,282.95 and 577,420.10 is: 866,130.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,855.30 : 1,291,282.95 = 577,420.10 : x
  2. Step 2: Convert to fraction form
    860,855.30/1,291,282.95 = 577,420.10/x
  3. Step 3: Cross multiply
    860,855.30x = 1,291,282.95 × 577,420.10
  4. Step 4: Simplify right side
    860,855.30x = 745,612,730,117.30
  5. Step 5: Solve for x
    x = 745,612,730,117.30/860,855.30
  6. Step 6: Final answer
    x = 866,130.15

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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.