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Finding the Fourth Proportional to 708,551.51, 977,752.08 and 398,500.52

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Solution

The fourth proportional to 708,551.51, 977,752.08 and 398,500.52 is: 549,903.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,551.51 : 977,752.08 = 398,500.52 : x
  2. Step 2: Convert to fraction form
    708,551.51/977,752.08 = 398,500.52/x
  3. Step 3: Cross multiply
    708,551.51x = 977,752.08 × 398,500.52
  4. Step 4: Simplify right side
    708,551.51x = 389,634,707,422.32
  5. Step 5: Solve for x
    x = 389,634,707,422.32/708,551.51
  6. Step 6: Final answer
    x = 549,903.15

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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.