Home / 877,417.20-1,315,218.60-477,212.40

Finding the Fourth Proportional to 877,417.20, 1,315,218.60 and 477,212.40

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Solution

The fourth proportional to 877,417.20, 1,315,218.60 and 477,212.40 is: 715,325.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,417.20 : 1,315,218.60 = 477,212.40 : x
  2. Step 2: Convert to fraction form
    877,417.20/1,315,218.60 = 477,212.40/x
  3. Step 3: Cross multiply
    877,417.20x = 1,315,218.60 × 477,212.40
  4. Step 4: Simplify right side
    877,417.20x = 627,638,624,630.64
  5. Step 5: Solve for x
    x = 627,638,624,630.64/877,417.20
  6. Step 6: Final answer
    x = 715,325.19

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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.