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Finding the Fourth Proportional to 571,342.60, 788,397.06 and 316,688.32

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Solution

The fourth proportional to 571,342.60, 788,397.06 and 316,688.32 is: 436,998.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,342.60 : 788,397.06 = 316,688.32 : x
  2. Step 2: Convert to fraction form
    571,342.60/788,397.06 = 316,688.32/x
  3. Step 3: Cross multiply
    571,342.60x = 788,397.06 × 316,688.32
  4. Step 4: Simplify right side
    571,342.60x = 249,676,140,424.34
  5. Step 5: Solve for x
    x = 249,676,140,424.34/571,342.60
  6. Step 6: Final answer
    x = 436,998.99

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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.