Home / 810,312,946.45-1,117,800,519.90-492,870,283.36

Finding the Fourth Proportional to 810,312,946.45, 1,117,800,519.90 and 492,870,283.36

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Solution

The fourth proportional to 810,312,946.45, 1,117,800,519.90 and 492,870,283.36 is: 679,898,626.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,312,946.45 : 1,117,800,519.90 = 492,870,283.36 : x
  2. Step 2: Convert to fraction form
    810,312,946.45/1,117,800,519.90 = 492,870,283.36/x
  3. Step 3: Cross multiply
    810,312,946.45x = 1,117,800,519.90 × 492,870,283.36
  4. Step 4: Simplify right side
    810,312,946.45x = 550,930,658,983,068,352
  5. Step 5: Solve for x
    x = 550,930,658,983,068,352/810,312,946.45
  6. Step 6: Final answer
    x = 679,898,626.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.