Home / 5,280,260.40-7,920,323.70-1,685,981.76

Finding the Fourth Proportional to 5,280,260.40, 7,920,323.70 and 1,685,981.76

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Solution

The fourth proportional to 5,280,260.40, 7,920,323.70 and 1,685,981.76 is: 2,528,951.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280,260.40 : 7,920,323.70 = 1,685,981.76 : x
  2. Step 2: Convert to fraction form
    5,280,260.40/7,920,323.70 = 1,685,981.76/x
  3. Step 3: Cross multiply
    5,280,260.40x = 7,920,323.70 × 1,685,981.76
  4. Step 4: Simplify right side
    5,280,260.40x = 13,353,521,291,495.71
  5. Step 5: Solve for x
    x = 13,353,521,291,495.71/5,280,260.40
  6. Step 6: Final answer
    x = 2,528,951.28

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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.