Home / 806,208,047.60-1,209,312,071.40-644,964,911.60

Finding the Fourth Proportional to 806,208,047.60, 1,209,312,071.40 and 644,964,911.60

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Solution

The fourth proportional to 806,208,047.60, 1,209,312,071.40 and 644,964,911.60 is: 967,447,367.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,208,047.60 : 1,209,312,071.40 = 644,964,911.60 : x
  2. Step 2: Convert to fraction form
    806,208,047.60/1,209,312,071.40 = 644,964,911.60/x
  3. Step 3: Cross multiply
    806,208,047.60x = 1,209,312,071.40 × 644,964,911.60
  4. Step 4: Simplify right side
    806,208,047.60x = 779,963,853,227,313,920
  5. Step 5: Solve for x
    x = 779,963,853,227,313,920/806,208,047.60
  6. Step 6: Final answer
    x = 967,447,367.40

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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.