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Finding the Fourth Proportional to 708,271.52, 977,379.88 and 385,980.64

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Solution

The fourth proportional to 708,271.52, 977,379.88 and 385,980.64 is: 532,634.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,271.52 : 977,379.88 = 385,980.64 : x
  2. Step 2: Convert to fraction form
    708,271.52/977,379.88 = 385,980.64/x
  3. Step 3: Cross multiply
    708,271.52x = 977,379.88 × 385,980.64
  4. Step 4: Simplify right side
    708,271.52x = 377,249,711,605.52
  5. Step 5: Solve for x
    x = 377,249,711,605.52/708,271.52
  6. Step 6: Final answer
    x = 532,634.31

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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.