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Finding the Fourth Proportional to 430,574.55, 645,730.47 and 346,134.48

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Solution

The fourth proportional to 430,574.55, 645,730.47 and 346,134.48 is: 519,096.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,574.55 : 645,730.47 = 346,134.48 : x
  2. Step 2: Convert to fraction form
    430,574.55/645,730.47 = 346,134.48/x
  3. Step 3: Cross multiply
    430,574.55x = 645,730.47 × 346,134.48
  4. Step 4: Simplify right side
    430,574.55x = 223,509,580,453.61
  5. Step 5: Solve for x
    x = 223,509,580,453.61/430,574.55
  6. Step 6: Final answer
    x = 519,096.13

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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.