Home / 909,936,488.19-1,255,709,616.91-492,248,657.91

Finding the Fourth Proportional to 909,936,488.19, 1,255,709,616.91 and 492,248,657.91

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Solution

The fourth proportional to 909,936,488.19, 1,255,709,616.91 and 492,248,657.91 is: 679,301,667.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,936,488.19 : 1,255,709,616.91 = 492,248,657.91 : x
  2. Step 2: Convert to fraction form
    909,936,488.19/1,255,709,616.91 = 492,248,657.91/x
  3. Step 3: Cross multiply
    909,936,488.19x = 1,255,709,616.91 × 492,248,657.91
  4. Step 4: Simplify right side
    909,936,488.19x = 618,121,373,648,627,840
  5. Step 5: Solve for x
    x = 618,121,373,648,627,840/909,936,488.19
  6. Step 6: Final answer
    x = 679,301,667.39

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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.