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Finding the Fourth Proportional to 553,376.80, 830,065.20 and 530,048.80

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Solution

The fourth proportional to 553,376.80, 830,065.20 and 530,048.80 is: 795,073.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,376.80 : 830,065.20 = 530,048.80 : x
  2. Step 2: Convert to fraction form
    553,376.80/830,065.20 = 530,048.80/x
  3. Step 3: Cross multiply
    553,376.80x = 830,065.20 × 530,048.80
  4. Step 4: Simplify right side
    553,376.80x = 439,975,063,181.76
  5. Step 5: Solve for x
    x = 439,975,063,181.76/553,376.80
  6. Step 6: Final answer
    x = 795,073.20

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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.