Home / 553,298.70-829,948.05-520,056.30

Finding the Fourth Proportional to 553,298.70, 829,948.05 and 520,056.30

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Solution

The fourth proportional to 553,298.70, 829,948.05 and 520,056.30 is: 780,084.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,298.70 : 829,948.05 = 520,056.30 : x
  2. Step 2: Convert to fraction form
    553,298.70/829,948.05 = 520,056.30/x
  3. Step 3: Cross multiply
    553,298.70x = 829,948.05 × 520,056.30
  4. Step 4: Simplify right side
    553,298.70x = 431,619,712,075.22
  5. Step 5: Solve for x
    x = 431,619,712,075.22/553,298.70
  6. Step 6: Final answer
    x = 780,084.45

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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.