Home / 717,368.03-989,955.81-395,108.13

Finding the Fourth Proportional to 717,368.03, 989,955.81 and 395,108.13

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Solution

The fourth proportional to 717,368.03, 989,955.81 and 395,108.13 is: 545,242.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,368.03 : 989,955.81 = 395,108.13 : x
  2. Step 2: Convert to fraction form
    717,368.03/989,955.81 = 395,108.13/x
  3. Step 3: Cross multiply
    717,368.03x = 989,955.81 × 395,108.13
  4. Step 4: Simplify right side
    717,368.03x = 391,139,588,871.74
  5. Step 5: Solve for x
    x = 391,139,588,871.74/717,368.03
  6. Step 6: Final answer
    x = 545,242.57

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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.