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Finding the Fourth Proportional to 570,913.08, 787,860.06 and 316,280.76

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Solution

The fourth proportional to 570,913.08, 787,860.06 and 316,280.76 is: 436,467.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,913.08 : 787,860.06 = 316,280.76 : x
  2. Step 2: Convert to fraction form
    570,913.08/787,860.06 = 316,280.76/x
  3. Step 3: Cross multiply
    570,913.08x = 787,860.06 × 316,280.76
  4. Step 4: Simplify right side
    570,913.08x = 249,184,978,550.45
  5. Step 5: Solve for x
    x = 249,184,978,550.45/570,913.08
  6. Step 6: Final answer
    x = 436,467.45

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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.