Home / 531,539,774.40-797,309,661.60-420,574,893.60

Finding the Fourth Proportional to 531,539,774.40, 797,309,661.60 and 420,574,893.60

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Solution

The fourth proportional to 531,539,774.40, 797,309,661.60 and 420,574,893.60 is: 630,862,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,539,774.40 : 797,309,661.60 = 420,574,893.60 : x
  2. Step 2: Convert to fraction form
    531,539,774.40/797,309,661.60 = 420,574,893.60/x
  3. Step 3: Cross multiply
    531,539,774.40x = 797,309,661.60 × 420,574,893.60
  4. Step 4: Simplify right side
    531,539,774.40x = 335,328,426,093,672,064
  5. Step 5: Solve for x
    x = 335,328,426,093,672,064/531,539,774.40
  6. Step 6: Final answer
    x = 630,862,340.40

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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.