Home / 708,285.23-977,405.12-385,988.45

Finding the Fourth Proportional to 708,285.23, 977,405.12 and 385,988.45

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Solution

The fourth proportional to 708,285.23, 977,405.12 and 385,988.45 is: 532,648.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,285.23 : 977,405.12 = 385,988.45 : x
  2. Step 2: Convert to fraction form
    708,285.23/977,405.12 = 385,988.45/x
  3. Step 3: Cross multiply
    708,285.23x = 977,405.12 × 385,988.45
  4. Step 4: Simplify right side
    708,285.23x = 377,267,087,290.86
  5. Step 5: Solve for x
    x = 377,267,087,290.86/708,285.23
  6. Step 6: Final answer
    x = 532,648.53

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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.