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Finding the Fourth Proportional to 673,547.22, 929,486.61 and 371,721.78

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Solution

The fourth proportional to 673,547.22, 929,486.61 and 371,721.78 is: 512,971.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,547.22 : 929,486.61 = 371,721.78 : x
  2. Step 2: Convert to fraction form
    673,547.22/929,486.61 = 371,721.78/x
  3. Step 3: Cross multiply
    673,547.22x = 929,486.61 × 371,721.78
  4. Step 4: Simplify right side
    673,547.22x = 345,510,417,155.37
  5. Step 5: Solve for x
    x = 345,510,417,155.37/673,547.22
  6. Step 6: Final answer
    x = 512,971.34

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1.5x scale

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.