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Finding the Fourth Proportional to 522,060.45, 720,790.29 and 400,985.07

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Solution

The fourth proportional to 522,060.45, 720,790.29 and 400,985.07 is: 553,625.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,060.45 : 720,790.29 = 400,985.07 : x
  2. Step 2: Convert to fraction form
    522,060.45/720,790.29 = 400,985.07/x
  3. Step 3: Cross multiply
    522,060.45x = 720,790.29 × 400,985.07
  4. Step 4: Simplify right side
    522,060.45x = 289,026,144,890.97
  5. Step 5: Solve for x
    x = 289,026,144,890.97/522,060.45
  6. Step 6: Final answer
    x = 553,625.82

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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.