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Finding the Fourth Proportional to 745,802.51, 1,029,172.03 and 423,469.76

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Solution

The fourth proportional to 745,802.51, 1,029,172.03 and 423,469.76 is: 584,368.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,802.51 : 1,029,172.03 = 423,469.76 : x
  2. Step 2: Convert to fraction form
    745,802.51/1,029,172.03 = 423,469.76/x
  3. Step 3: Cross multiply
    745,802.51x = 1,029,172.03 × 423,469.76
  4. Step 4: Simplify right side
    745,802.51x = 435,823,226,338.28
  5. Step 5: Solve for x
    x = 435,823,226,338.28/745,802.51
  6. Step 6: Final answer
    x = 584,368.14

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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.