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Finding the Fourth Proportional to 708,367.32, 977,518.53 and 386,070.66

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Solution

The fourth proportional to 708,367.32, 977,518.53 and 386,070.66 is: 532,762.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,367.32 : 977,518.53 = 386,070.66 : x
  2. Step 2: Convert to fraction form
    708,367.32/977,518.53 = 386,070.66/x
  3. Step 3: Cross multiply
    708,367.32x = 977,518.53 × 386,070.66
  4. Step 4: Simplify right side
    708,367.32x = 377,391,224,039.33
  5. Step 5: Solve for x
    x = 377,391,224,039.33/708,367.32
  6. Step 6: Final answer
    x = 532,762.05

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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.