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Finding the Fourth Proportional to 612,719.09, 917,503.98 and 375,342.11

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Solution

The fourth proportional to 612,719.09, 917,503.98 and 375,342.11 is: 562,048.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,719.09 : 917,503.98 = 375,342.11 : x
  2. Step 2: Convert to fraction form
    612,719.09/917,503.98 = 375,342.11/x
  3. Step 3: Cross multiply
    612,719.09x = 917,503.98 × 375,342.11
  4. Step 4: Simplify right side
    612,719.09x = 344,377,875,199.08
  5. Step 5: Solve for x
    x = 344,377,875,199.08/612,719.09
  6. Step 6: Final answer
    x = 562,048.55

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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.