Home / 631,250.40-946,875.60-395,320.80

Finding the Fourth Proportional to 631,250.40, 946,875.60 and 395,320.80

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Solution

The fourth proportional to 631,250.40, 946,875.60 and 395,320.80 is: 592,981.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,250.40 : 946,875.60 = 395,320.80 : x
  2. Step 2: Convert to fraction form
    631,250.40/946,875.60 = 395,320.80/x
  3. Step 3: Cross multiply
    631,250.40x = 946,875.60 × 395,320.80
  4. Step 4: Simplify right side
    631,250.40x = 374,319,619,692.48
  5. Step 5: Solve for x
    x = 374,319,619,692.48/631,250.40
  6. Step 6: Final answer
    x = 592,981.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.