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Finding the Fourth Proportional to 553,347.20, 830,020.80 and 530,019.20

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Solution

The fourth proportional to 553,347.20, 830,020.80 and 530,019.20 is: 795,028.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,347.20 : 830,020.80 = 530,019.20 : x
  2. Step 2: Convert to fraction form
    553,347.20/830,020.80 = 530,019.20/x
  3. Step 3: Cross multiply
    553,347.20x = 830,020.80 × 530,019.20
  4. Step 4: Simplify right side
    553,347.20x = 439,926,960,399.36
  5. Step 5: Solve for x
    x = 439,926,960,399.36/553,347.20
  6. Step 6: Final answer
    x = 795,028.80

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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.