Home / 662,114.25-913,816.08-390,095.19

Finding the Fourth Proportional to 662,114.25, 913,816.08 and 390,095.19

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Solution

The fourth proportional to 662,114.25, 913,816.08 and 390,095.19 is: 538,389.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,114.25 : 913,816.08 = 390,095.19 : x
  2. Step 2: Convert to fraction form
    662,114.25/913,816.08 = 390,095.19/x
  3. Step 3: Cross multiply
    662,114.25x = 913,816.08 × 390,095.19
  4. Step 4: Simplify right side
    662,114.25x = 356,475,257,352.66
  5. Step 5: Solve for x
    x = 356,475,257,352.66/662,114.25
  6. Step 6: Final answer
    x = 538,389.34

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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.