Home / 815,301.71-1,123,264.98-630,906.16

Finding the Fourth Proportional to 815,301.71, 1,123,264.98 and 630,906.16

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Solution

The fourth proportional to 815,301.71, 1,123,264.98 and 630,906.16 is: 869,217.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,301.71 : 1,123,264.98 = 630,906.16 : x
  2. Step 2: Convert to fraction form
    815,301.71/1,123,264.98 = 630,906.16/x
  3. Step 3: Cross multiply
    815,301.71x = 1,123,264.98 × 630,906.16
  4. Step 4: Simplify right side
    815,301.71x = 708,674,792,386.11
  5. Step 5: Solve for x
    x = 708,674,792,386.11/815,301.71
  6. Step 6: Final answer
    x = 869,217.84

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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.