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Finding the Fourth Proportional to 570,420.84, 787,263.12 and 328,657.08

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Solution

The fourth proportional to 570,420.84, 787,263.12 and 328,657.08 is: 453,594.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,420.84 : 787,263.12 = 328,657.08 : x
  2. Step 2: Convert to fraction form
    570,420.84/787,263.12 = 328,657.08/x
  3. Step 3: Cross multiply
    570,420.84x = 787,263.12 × 328,657.08
  4. Step 4: Simplify right side
    570,420.84x = 258,739,598,210.89
  5. Step 5: Solve for x
    x = 258,739,598,210.89/570,420.84
  6. Step 6: Final answer
    x = 453,594.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.