Home / 1,420,436,838.51-1,960,271,158.05-785,345,578.79

Finding the Fourth Proportional to 1,420,436,838.51, 1,960,271,158.05 and 785,345,578.79

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Solution

The fourth proportional to 1,420,436,838.51, 1,960,271,158.05 and 785,345,578.79 is: 1,083,814,672.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,436,838.51 : 1,960,271,158.05 = 785,345,578.79 : x
  2. Step 2: Convert to fraction form
    1,420,436,838.51/1,960,271,158.05 = 785,345,578.79/x
  3. Step 3: Cross multiply
    1,420,436,838.51x = 1,960,271,158.05 × 785,345,578.79
  4. Step 4: Simplify right side
    1,420,436,838.51x = 1,539,490,287,194,319,360
  5. Step 5: Solve for x
    x = 1,539,490,287,194,319,360/1,420,436,838.51
  6. Step 6: Final answer
    x = 1,083,814,672.68

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1.5x scale

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.