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Finding the Fourth Proportional to 991,794.60, 1,490,802.30 and 973,132.20

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Solution

The fourth proportional to 991,794.60, 1,490,802.30 and 973,132.20 is: 1,462,750.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,794.60 : 1,490,802.30 = 973,132.20 : x
  2. Step 2: Convert to fraction form
    991,794.60/1,490,802.30 = 973,132.20/x
  3. Step 3: Cross multiply
    991,794.60x = 1,490,802.30 × 973,132.20
  4. Step 4: Simplify right side
    991,794.60x = 1,450,747,721,964.06
  5. Step 5: Solve for x
    x = 1,450,747,721,964.06/991,794.60
  6. Step 6: Final answer
    x = 1,462,750.17

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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.