Home / 530,012.80-731,427.20-288,300.80

Finding the Fourth Proportional to 530,012.80, 731,427.20 and 288,300.80

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Solution

The fourth proportional to 530,012.80, 731,427.20 and 288,300.80 is: 397,860.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,012.80 : 731,427.20 = 288,300.80 : x
  2. Step 2: Convert to fraction form
    530,012.80/731,427.20 = 288,300.80/x
  3. Step 3: Cross multiply
    530,012.80x = 731,427.20 × 288,300.80
  4. Step 4: Simplify right side
    530,012.80x = 210,871,046,901.76
  5. Step 5: Solve for x
    x = 210,871,046,901.76/530,012.80
  6. Step 6: Final answer
    x = 397,860.29

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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.