Home / 688,036.70-1,032,055.05-520,075.10

Finding the Fourth Proportional to 688,036.70, 1,032,055.05 and 520,075.10

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Solution

The fourth proportional to 688,036.70, 1,032,055.05 and 520,075.10 is: 780,112.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,036.70 : 1,032,055.05 = 520,075.10 : x
  2. Step 2: Convert to fraction form
    688,036.70/1,032,055.05 = 520,075.10/x
  3. Step 3: Cross multiply
    688,036.70x = 1,032,055.05 × 520,075.10
  4. Step 4: Simplify right side
    688,036.70x = 536,746,133,334.26
  5. Step 5: Solve for x
    x = 536,746,133,334.26/688,036.70
  6. Step 6: Final answer
    x = 780,112.65

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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.