Home / 708,304.93-977,341.12-398,166.20

Finding the Fourth Proportional to 708,304.93, 977,341.12 and 398,166.20

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Solution

The fourth proportional to 708,304.93, 977,341.12 and 398,166.20 is: 549,402.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,304.93 : 977,341.12 = 398,166.20 : x
  2. Step 2: Convert to fraction form
    708,304.93/977,341.12 = 398,166.20/x
  3. Step 3: Cross multiply
    708,304.93x = 977,341.12 × 398,166.20
  4. Step 4: Simplify right side
    708,304.93x = 389,144,199,876.74
  5. Step 5: Solve for x
    x = 389,144,199,876.74/708,304.93
  6. Step 6: Final answer
    x = 549,402.08

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Half scale
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Double scale
Find fourth proportional to 708,305.93, 977,342.50 and 398,167.20
Similar ratio
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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.