Home / 877,686.55-1,211,200.50-475,278.55

Finding the Fourth Proportional to 877,686.55, 1,211,200.50 and 475,278.55

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Solution

The fourth proportional to 877,686.55, 1,211,200.50 and 475,278.55 is: 655,880.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,686.55 : 1,211,200.50 = 475,278.55 : x
  2. Step 2: Convert to fraction form
    877,686.55/1,211,200.50 = 475,278.55/x
  3. Step 3: Cross multiply
    877,686.55x = 1,211,200.50 × 475,278.55
  4. Step 4: Simplify right side
    877,686.55x = 575,657,617,399.28
  5. Step 5: Solve for x
    x = 575,657,617,399.28/877,686.55
  6. Step 6: Final answer
    x = 655,880.64

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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.