Home / 716,837.75-989,236.03-390,153.10

Finding the Fourth Proportional to 716,837.75, 989,236.03 and 390,153.10

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Solution

The fourth proportional to 716,837.75, 989,236.03 and 390,153.10 is: 538,411.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,837.75 : 989,236.03 = 390,153.10 : x
  2. Step 2: Convert to fraction form
    716,837.75/989,236.03 = 390,153.10/x
  3. Step 3: Cross multiply
    716,837.75x = 989,236.03 × 390,153.10
  4. Step 4: Simplify right side
    716,837.75x = 385,953,502,238.49
  5. Step 5: Solve for x
    x = 385,953,502,238.49/716,837.75
  6. Step 6: Final answer
    x = 538,411.24

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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.