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Finding the Fourth Proportional to 579,688.60, 812,117 and 579,688.60

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Solution

The fourth proportional to 579,688.60, 812,117 and 579,688.60 is: 812,117

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,688.60 : 812,117 = 579,688.60 : x
  2. Step 2: Convert to fraction form
    579,688.60/812,117 = 579,688.60/x
  3. Step 3: Cross multiply
    579,688.60x = 812,117 × 579,688.60
  4. Step 4: Simplify right side
    579,688.60x = 470,774,966,766.20
  5. Step 5: Solve for x
    x = 470,774,966,766.20/579,688.60
  6. Step 6: Final answer
    x = 812,117

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.