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Finding the Fourth Proportional to 602,690.76, 831,641.40 and 357,636.60

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Solution

The fourth proportional to 602,690.76, 831,641.40 and 357,636.60 is: 493,495.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,690.76 : 831,641.40 = 357,636.60 : x
  2. Step 2: Convert to fraction form
    602,690.76/831,641.40 = 357,636.60/x
  3. Step 3: Cross multiply
    602,690.76x = 831,641.40 × 357,636.60
  4. Step 4: Simplify right side
    602,690.76x = 297,425,402,715.24
  5. Step 5: Solve for x
    x = 297,425,402,715.24/602,690.76
  6. Step 6: Final answer
    x = 493,495.87

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1.5x scale

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.