Home / 860,417.90-1,187,327.93-478,436.48

Finding the Fourth Proportional to 860,417.90, 1,187,327.93 and 478,436.48

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Solution

The fourth proportional to 860,417.90, 1,187,327.93 and 478,436.48 is: 660,215.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,417.90 : 1,187,327.93 = 478,436.48 : x
  2. Step 2: Convert to fraction form
    860,417.90/1,187,327.93 = 478,436.48/x
  3. Step 3: Cross multiply
    860,417.90x = 1,187,327.93 × 478,436.48
  4. Step 4: Simplify right side
    860,417.90x = 568,060,987,106.06
  5. Step 5: Solve for x
    x = 568,060,987,106.06/860,417.90
  6. Step 6: Final answer
    x = 660,215.22

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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.