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Finding the Fourth Proportional to 621,347.20, 930,708.60 and 621,347.20

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Solution

The fourth proportional to 621,347.20, 930,708.60 and 621,347.20 is: 930,708.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,347.20 : 930,708.60 = 621,347.20 : x
  2. Step 2: Convert to fraction form
    621,347.20/930,708.60 = 621,347.20/x
  3. Step 3: Cross multiply
    621,347.20x = 930,708.60 × 621,347.20
  4. Step 4: Simplify right side
    621,347.20x = 578,293,182,625.92
  5. Step 5: Solve for x
    x = 578,293,182,625.92/621,347.20
  6. Step 6: Final answer
    x = 930,708.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.