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Finding the Fourth Proportional to 977,430.80, 1,464,979.80 and 408,810.80

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Solution

The fourth proportional to 977,430.80, 1,464,979.80 and 408,810.80 is: 612,728.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,430.80 : 1,464,979.80 = 408,810.80 : x
  2. Step 2: Convert to fraction form
    977,430.80/1,464,979.80 = 408,810.80/x
  3. Step 3: Cross multiply
    977,430.80x = 1,464,979.80 × 408,810.80
  4. Step 4: Simplify right side
    977,430.80x = 598,899,564,021.84
  5. Step 5: Solve for x
    x = 598,899,564,021.84/977,430.80
  6. Step 6: Final answer
    x = 612,728.35

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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.