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Finding the Fourth Proportional to 1,267,315.47, 1,748,828.48 and 723,429.63

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Solution

The fourth proportional to 1,267,315.47, 1,748,828.48 and 723,429.63 is: 998,294.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267,315.47 : 1,748,828.48 = 723,429.63 : x
  2. Step 2: Convert to fraction form
    1,267,315.47/1,748,828.48 = 723,429.63/x
  3. Step 3: Cross multiply
    1,267,315.47x = 1,748,828.48 × 723,429.63
  4. Step 4: Simplify right side
    1,267,315.47x = 1,265,154,336,602.71
  5. Step 5: Solve for x
    x = 1,265,154,336,602.71/1,267,315.47
  6. Step 6: Final answer
    x = 998,294.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.