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Finding the Fourth Proportional to 553,359.20, 830,038.80 and 530,031.20

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Solution

The fourth proportional to 553,359.20, 830,038.80 and 530,031.20 is: 795,046.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,359.20 : 830,038.80 = 530,031.20 : x
  2. Step 2: Convert to fraction form
    553,359.20/830,038.80 = 530,031.20/x
  3. Step 3: Cross multiply
    553,359.20x = 830,038.80 × 530,031.20
  4. Step 4: Simplify right side
    553,359.20x = 439,946,461,210.56
  5. Step 5: Solve for x
    x = 439,946,461,210.56/553,359.20
  6. Step 6: Final answer
    x = 795,046.80

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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.