Home / 688,037.20-1,032,055.80-520,075.60

Finding the Fourth Proportional to 688,037.20, 1,032,055.80 and 520,075.60

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Solution

The fourth proportional to 688,037.20, 1,032,055.80 and 520,075.60 is: 780,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,037.20 : 1,032,055.80 = 520,075.60 : x
  2. Step 2: Convert to fraction form
    688,037.20/1,032,055.80 = 520,075.60/x
  3. Step 3: Cross multiply
    688,037.20x = 1,032,055.80 × 520,075.60
  4. Step 4: Simplify right side
    688,037.20x = 536,747,039,418.48
  5. Step 5: Solve for x
    x = 536,747,039,418.48/688,037.20
  6. Step 6: Final answer
    x = 780,113.40

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Double scale
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Similar ratio
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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.