Home / 1,287,899.06-1,931,438.37-423,133.20

Finding the Fourth Proportional to 1,287,899.06, 1,931,438.37 and 423,133.20

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Solution

The fourth proportional to 1,287,899.06, 1,931,438.37 and 423,133.20 is: 634,565.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,899.06 : 1,931,438.37 = 423,133.20 : x
  2. Step 2: Convert to fraction form
    1,287,899.06/1,931,438.37 = 423,133.20/x
  3. Step 3: Cross multiply
    1,287,899.06x = 1,931,438.37 × 423,133.20
  4. Step 4: Simplify right side
    1,287,899.06x = 817,255,698,100.88
  5. Step 5: Solve for x
    x = 817,255,698,100.88/1,287,899.06
  6. Step 6: Final answer
    x = 634,565.03

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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.