Home / 1,620,117.60-2,430,176.40-778,466.40

Finding the Fourth Proportional to 1,620,117.60, 2,430,176.40 and 778,466.40

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Solution

The fourth proportional to 1,620,117.60, 2,430,176.40 and 778,466.40 is: 1,167,699.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620,117.60 : 2,430,176.40 = 778,466.40 : x
  2. Step 2: Convert to fraction form
    1,620,117.60/2,430,176.40 = 778,466.40/x
  3. Step 3: Cross multiply
    1,620,117.60x = 2,430,176.40 × 778,466.40
  4. Step 4: Simplify right side
    1,620,117.60x = 1,891,810,673,472.96
  5. Step 5: Solve for x
    x = 1,891,810,673,472.96/1,620,117.60
  6. Step 6: Final answer
    x = 1,167,699.60

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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.