Home / 920,006.57-1,266,879.15-661,428.45

Finding the Fourth Proportional to 920,006.57, 1,266,879.15 and 661,428.45

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Solution

The fourth proportional to 920,006.57, 1,266,879.15 and 661,428.45 is: 910,808.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,006.57 : 1,266,879.15 = 661,428.45 : x
  2. Step 2: Convert to fraction form
    920,006.57/1,266,879.15 = 661,428.45/x
  3. Step 3: Cross multiply
    920,006.57x = 1,266,879.15 × 661,428.45
  4. Step 4: Simplify right side
    920,006.57x = 837,949,912,521.82
  5. Step 5: Solve for x
    x = 837,949,912,521.82/920,006.57
  6. Step 6: Final answer
    x = 910,808.62

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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.