Home / 789,130.98-1,089,000.51-426,554.63

Finding the Fourth Proportional to 789,130.98, 1,089,000.51 and 426,554.63

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Solution

The fourth proportional to 789,130.98, 1,089,000.51 and 426,554.63 is: 588,645.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,130.98 : 1,089,000.51 = 426,554.63 : x
  2. Step 2: Convert to fraction form
    789,130.98/1,089,000.51 = 426,554.63/x
  3. Step 3: Cross multiply
    789,130.98x = 1,089,000.51 × 426,554.63
  4. Step 4: Simplify right side
    789,130.98x = 464,518,209,612.86
  5. Step 5: Solve for x
    x = 464,518,209,612.86/789,130.98
  6. Step 6: Final answer
    x = 588,645.26

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Double scale
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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.