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Finding the Fourth Proportional to 977,416.80, 1,470,061.80 and 875,065.20

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Solution

The fourth proportional to 977,416.80, 1,470,061.80 and 875,065.20 is: 1,316,122.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,416.80 : 1,470,061.80 = 875,065.20 : x
  2. Step 2: Convert to fraction form
    977,416.80/1,470,061.80 = 875,065.20/x
  3. Step 3: Cross multiply
    977,416.80x = 1,470,061.80 × 875,065.20
  4. Step 4: Simplify right side
    977,416.80x = 1,286,399,923,029.36
  5. Step 5: Solve for x
    x = 1,286,399,923,029.36/977,416.80
  6. Step 6: Final answer
    x = 1,316,122.17

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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.