Home / 553,529.02-763,943.34-311,859.46

Finding the Fourth Proportional to 553,529.02, 763,943.34 and 311,859.46

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Solution

The fourth proportional to 553,529.02, 763,943.34 and 311,859.46 is: 430,407.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,529.02 : 763,943.34 = 311,859.46 : x
  2. Step 2: Convert to fraction form
    553,529.02/763,943.34 = 311,859.46/x
  3. Step 3: Cross multiply
    553,529.02x = 763,943.34 × 311,859.46
  4. Step 4: Simplify right side
    553,529.02x = 238,242,957,483.00
  5. Step 5: Solve for x
    x = 238,242,957,483.00/553,529.02
  6. Step 6: Final answer
    x = 430,407.35

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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.