Home / 1,315,197,137.48-1,814,957,585.40-712,352,762.72

Finding the Fourth Proportional to 1,315,197,137.48, 1,814,957,585.40 and 712,352,762.72

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Solution

The fourth proportional to 1,315,197,137.48, 1,814,957,585.40 and 712,352,762.72 is: 983,038,978.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,197,137.48 : 1,814,957,585.40 = 712,352,762.72 : x
  2. Step 2: Convert to fraction form
    1,315,197,137.48/1,814,957,585.40 = 712,352,762.72/x
  3. Step 3: Cross multiply
    1,315,197,137.48x = 1,814,957,585.40 × 712,352,762.72
  4. Step 4: Simplify right side
    1,315,197,137.48x = 1,292,890,050,179,310,336
  5. Step 5: Solve for x
    x = 1,292,890,050,179,310,336/1,315,197,137.48
  6. Step 6: Final answer
    x = 983,038,978.21

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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.