Home / 448,200.04-618,320.10-320,829.16

Finding the Fourth Proportional to 448,200.04, 618,320.10 and 320,829.16

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Solution

The fourth proportional to 448,200.04, 618,320.10 and 320,829.16 is: 442,603.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,200.04 : 618,320.10 = 320,829.16 : x
  2. Step 2: Convert to fraction form
    448,200.04/618,320.10 = 320,829.16/x
  3. Step 3: Cross multiply
    448,200.04x = 618,320.10 × 320,829.16
  4. Step 4: Simplify right side
    448,200.04x = 198,375,118,294.12
  5. Step 5: Solve for x
    x = 198,375,118,294.12/448,200.04
  6. Step 6: Final answer
    x = 442,603.97

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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.