Home / 708,478.86-977,681.34-386,195.25

Finding the Fourth Proportional to 708,478.86, 977,681.34 and 386,195.25

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Solution

The fourth proportional to 708,478.86, 977,681.34 and 386,195.25 is: 532,938.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,478.86 : 977,681.34 = 386,195.25 : x
  2. Step 2: Convert to fraction form
    708,478.86/977,681.34 = 386,195.25/x
  3. Step 3: Cross multiply
    708,478.86x = 977,681.34 × 386,195.25
  4. Step 4: Simplify right side
    708,478.86x = 377,575,889,521.64
  5. Step 5: Solve for x
    x = 377,575,889,521.64/708,478.86
  6. Step 6: Final answer
    x = 532,938.82

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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.