Home / 642,500.20-962,828.70-472,695.40

Finding the Fourth Proportional to 642,500.20, 962,828.70 and 472,695.40

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Solution

The fourth proportional to 642,500.20, 962,828.70 and 472,695.40 is: 708,365.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,500.20 : 962,828.70 = 472,695.40 : x
  2. Step 2: Convert to fraction form
    642,500.20/962,828.70 = 472,695.40/x
  3. Step 3: Cross multiply
    642,500.20x = 962,828.70 × 472,695.40
  4. Step 4: Simplify right side
    642,500.20x = 455,124,697,477.98
  5. Step 5: Solve for x
    x = 455,124,697,477.98/642,500.20
  6. Step 6: Final answer
    x = 708,365.07

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1.5x scale

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.