Home / 677,057.34-934,316.19-390,570.06

Finding the Fourth Proportional to 677,057.34, 934,316.19 and 390,570.06

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Solution

The fourth proportional to 677,057.34, 934,316.19 and 390,570.06 is: 538,973.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,057.34 : 934,316.19 = 390,570.06 : x
  2. Step 2: Convert to fraction form
    677,057.34/934,316.19 = 390,570.06/x
  3. Step 3: Cross multiply
    677,057.34x = 934,316.19 × 390,570.06
  4. Step 4: Simplify right side
    677,057.34x = 364,915,930,387.27
  5. Step 5: Solve for x
    x = 364,915,930,387.27/677,057.34
  6. Step 6: Final answer
    x = 538,973.45

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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.