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Finding the Fourth Proportional to 645,624.80, 968,437.20 and 365,688.80

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Solution

The fourth proportional to 645,624.80, 968,437.20 and 365,688.80 is: 548,533.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,624.80 : 968,437.20 = 365,688.80 : x
  2. Step 2: Convert to fraction form
    645,624.80/968,437.20 = 365,688.80/x
  3. Step 3: Cross multiply
    645,624.80x = 968,437.20 × 365,688.80
  4. Step 4: Simplify right side
    645,624.80x = 354,146,637,543.36
  5. Step 5: Solve for x
    x = 354,146,637,543.36/645,624.80
  6. Step 6: Final answer
    x = 548,533.20

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Similar ratio
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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.