Home / 879,410.40-1,318,227.54-423,331.80

Finding the Fourth Proportional to 879,410.40, 1,318,227.54 and 423,331.80

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Solution

The fourth proportional to 879,410.40, 1,318,227.54 and 423,331.80 is: 634,570.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,410.40 : 1,318,227.54 = 423,331.80 : x
  2. Step 2: Convert to fraction form
    879,410.40/1,318,227.54 = 423,331.80/x
  3. Step 3: Cross multiply
    879,410.40x = 1,318,227.54 × 423,331.80
  4. Step 4: Simplify right side
    879,410.40x = 558,047,637,317.77
  5. Step 5: Solve for x
    x = 558,047,637,317.77/879,410.40
  6. Step 6: Final answer
    x = 634,570.20

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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.