Home / 612,204.42-916,779.38-386,885.10

Finding the Fourth Proportional to 612,204.42, 916,779.38 and 386,885.10

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Solution

The fourth proportional to 612,204.42, 916,779.38 and 386,885.10 is: 579,362.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,204.42 : 916,779.38 = 386,885.10 : x
  2. Step 2: Convert to fraction form
    612,204.42/916,779.38 = 386,885.10/x
  3. Step 3: Cross multiply
    612,204.42x = 916,779.38 × 386,885.10
  4. Step 4: Simplify right side
    612,204.42x = 354,688,280,174.81
  5. Step 5: Solve for x
    x = 354,688,280,174.81/612,204.42
  6. Step 6: Final answer
    x = 579,362.49

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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.