Home / 1,277,297,875.85-1,762,667,762.96-712,776,818.74

Finding the Fourth Proportional to 1,277,297,875.85, 1,762,667,762.96 and 712,776,818.74

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Solution

The fourth proportional to 1,277,297,875.85, 1,762,667,762.96 and 712,776,818.74 is: 983,630,165.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,297,875.85 : 1,762,667,762.96 = 712,776,818.74 : x
  2. Step 2: Convert to fraction form
    1,277,297,875.85/1,762,667,762.96 = 712,776,818.74/x
  3. Step 3: Cross multiply
    1,277,297,875.85x = 1,762,667,762.96 × 712,776,818.74
  4. Step 4: Simplify right side
    1,277,297,875.85x = 1,256,388,720,570,210,560
  5. Step 5: Solve for x
    x = 1,256,388,720,570,210,560/1,277,297,875.85
  6. Step 6: Final answer
    x = 983,630,165.15

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Double scale
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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.