Home / 703,963,022.22-971,423,715.51-390,697,448.40

Finding the Fourth Proportional to 703,963,022.22, 971,423,715.51 and 390,697,448.40

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Solution

The fourth proportional to 703,963,022.22, 971,423,715.51 and 390,697,448.40 is: 539,137,362.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,963,022.22 : 971,423,715.51 = 390,697,448.40 : x
  2. Step 2: Convert to fraction form
    703,963,022.22/971,423,715.51 = 390,697,448.40/x
  3. Step 3: Cross multiply
    703,963,022.22x = 971,423,715.51 × 390,697,448.40
  4. Step 4: Simplify right side
    703,963,022.22x = 379,532,766,965,004,480
  5. Step 5: Solve for x
    x = 379,532,766,965,004,480/703,963,022.22
  6. Step 6: Final answer
    x = 539,137,362.31

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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.