Home / 872,521.56-1,203,686.20-509,782.32

Finding the Fourth Proportional to 872,521.56, 1,203,686.20 and 509,782.32

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Solution

The fourth proportional to 872,521.56, 1,203,686.20 and 509,782.32 is: 703,269.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,521.56 : 1,203,686.20 = 509,782.32 : x
  2. Step 2: Convert to fraction form
    872,521.56/1,203,686.20 = 509,782.32/x
  3. Step 3: Cross multiply
    872,521.56x = 1,203,686.20 × 509,782.32
  4. Step 4: Simplify right side
    872,521.56x = 613,617,943,587.98
  5. Step 5: Solve for x
    x = 613,617,943,587.98/872,521.56
  6. Step 6: Final answer
    x = 703,269.66

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Double scale
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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.