Home / 913,909.39-1,261,234.35-506,011.21

Finding the Fourth Proportional to 913,909.39, 1,261,234.35 and 506,011.21

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Solution

The fourth proportional to 913,909.39, 1,261,234.35 and 506,011.21 is: 698,317.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,909.39 : 1,261,234.35 = 506,011.21 : x
  2. Step 2: Convert to fraction form
    913,909.39/1,261,234.35 = 506,011.21/x
  3. Step 3: Cross multiply
    913,909.39x = 1,261,234.35 × 506,011.21
  4. Step 4: Simplify right side
    913,909.39x = 638,198,719,537.06
  5. Step 5: Solve for x
    x = 638,198,719,537.06/913,909.39
  6. Step 6: Final answer
    x = 698,317.28

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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.