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Finding the Fourth Proportional to 607,389.60, 910,501.20 and 472,378.80

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Solution

The fourth proportional to 607,389.60, 910,501.20 and 472,378.80 is: 708,114.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,389.60 : 910,501.20 = 472,378.80 : x
  2. Step 2: Convert to fraction form
    607,389.60/910,501.20 = 472,378.80/x
  3. Step 3: Cross multiply
    607,389.60x = 910,501.20 × 472,378.80
  4. Step 4: Simplify right side
    607,389.60x = 430,101,464,254.56
  5. Step 5: Solve for x
    x = 430,101,464,254.56/607,389.60
  6. Step 6: Final answer
    x = 708,114.63

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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.