Home / 448,401.36-618,443.76-287,271.28

Finding the Fourth Proportional to 448,401.36, 618,443.76 and 287,271.28

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Solution

The fourth proportional to 448,401.36, 618,443.76 and 287,271.28 is: 396,210.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,401.36 : 618,443.76 = 287,271.28 : x
  2. Step 2: Convert to fraction form
    448,401.36/618,443.76 = 287,271.28/x
  3. Step 3: Cross multiply
    448,401.36x = 618,443.76 × 287,271.28
  4. Step 4: Simplify right side
    448,401.36x = 177,661,130,543.21
  5. Step 5: Solve for x
    x = 177,661,130,543.21/448,401.36
  6. Step 6: Final answer
    x = 396,210.06

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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.