Home / 926,209.56-1,278,223.02-518,307.84

Finding the Fourth Proportional to 926,209.56, 1,278,223.02 and 518,307.84

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Solution

The fourth proportional to 926,209.56, 1,278,223.02 and 518,307.84 is: 715,294.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,209.56 : 1,278,223.02 = 518,307.84 : x
  2. Step 2: Convert to fraction form
    926,209.56/1,278,223.02 = 518,307.84/x
  3. Step 3: Cross multiply
    926,209.56x = 1,278,223.02 × 518,307.84
  4. Step 4: Simplify right side
    926,209.56x = 662,513,012,534.48
  5. Step 5: Solve for x
    x = 662,513,012,534.48/926,209.56
  6. Step 6: Final answer
    x = 715,294.94

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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.