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Finding the Fourth Proportional to 660,674.40, 991,011.60 and 162,038.40

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Solution

The fourth proportional to 660,674.40, 991,011.60 and 162,038.40 is: 243,057.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,674.40 : 991,011.60 = 162,038.40 : x
  2. Step 2: Convert to fraction form
    660,674.40/991,011.60 = 162,038.40/x
  3. Step 3: Cross multiply
    660,674.40x = 991,011.60 × 162,038.40
  4. Step 4: Simplify right side
    660,674.40x = 160,581,934,045.44
  5. Step 5: Solve for x
    x = 160,581,934,045.44/660,674.40
  6. Step 6: Final answer
    x = 243,057.60

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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.