Home / 860,332.63-1,187,251.83-478,356.07

Finding the Fourth Proportional to 860,332.63, 1,187,251.83 and 478,356.07

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Solution

The fourth proportional to 860,332.63, 1,187,251.83 and 478,356.07 is: 660,127.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,332.63 : 1,187,251.83 = 478,356.07 : x
  2. Step 2: Convert to fraction form
    860,332.63/1,187,251.83 = 478,356.07/x
  3. Step 3: Cross multiply
    860,332.63x = 1,187,251.83 × 478,356.07
  4. Step 4: Simplify right side
    860,332.63x = 567,929,119,499.11
  5. Step 5: Solve for x
    x = 567,929,119,499.11/860,332.63
  6. Step 6: Final answer
    x = 660,127.37

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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.