Home / 877,415.20-1,315,215.60-477,210.40

Finding the Fourth Proportional to 877,415.20, 1,315,215.60 and 477,210.40

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Solution

The fourth proportional to 877,415.20, 1,315,215.60 and 477,210.40 is: 715,322.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,415.20 : 1,315,215.60 = 477,210.40 : x
  2. Step 2: Convert to fraction form
    877,415.20/1,315,215.60 = 477,210.40/x
  3. Step 3: Cross multiply
    877,415.20x = 1,315,215.60 × 477,210.40
  4. Step 4: Simplify right side
    877,415.20x = 627,634,562,562.24
  5. Step 5: Solve for x
    x = 627,634,562,562.24/877,415.20
  6. Step 6: Final answer
    x = 715,322.19

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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.