Home / 1,105,420.80-1,657,904.40-306,501.60

Finding the Fourth Proportional to 1,105,420.80, 1,657,904.40 and 306,501.60

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Solution

The fourth proportional to 1,105,420.80, 1,657,904.40 and 306,501.60 is: 459,689.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,420.80 : 1,657,904.40 = 306,501.60 : x
  2. Step 2: Convert to fraction form
    1,105,420.80/1,657,904.40 = 306,501.60/x
  3. Step 3: Cross multiply
    1,105,420.80x = 1,657,904.40 × 306,501.60
  4. Step 4: Simplify right side
    1,105,420.80x = 508,150,351,247.04
  5. Step 5: Solve for x
    x = 508,150,351,247.04/1,105,420.80
  6. Step 6: Final answer
    x = 459,689.51

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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.