Home / 812,985.60-1,219,038.48-645,582.88

Finding the Fourth Proportional to 812,985.60, 1,219,038.48 and 645,582.88

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Solution

The fourth proportional to 812,985.60, 1,219,038.48 and 645,582.88 is: 968,024.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,985.60 : 1,219,038.48 = 645,582.88 : x
  2. Step 2: Convert to fraction form
    812,985.60/1,219,038.48 = 645,582.88/x
  3. Step 3: Cross multiply
    812,985.60x = 1,219,038.48 × 645,582.88
  4. Step 4: Simplify right side
    812,985.60x = 786,990,372,749.22
  5. Step 5: Solve for x
    x = 786,990,372,749.22/812,985.60
  6. Step 6: Final answer
    x = 968,024.98

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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.