Home / 770,488,305.60-1,155,732,458.40-494,989,291.20

Finding the Fourth Proportional to 770,488,305.60, 1,155,732,458.40 and 494,989,291.20

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Solution

The fourth proportional to 770,488,305.60, 1,155,732,458.40 and 494,989,291.20 is: 742,483,936.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,488,305.60 : 1,155,732,458.40 = 494,989,291.20 : x
  2. Step 2: Convert to fraction form
    770,488,305.60/1,155,732,458.40 = 494,989,291.20/x
  3. Step 3: Cross multiply
    770,488,305.60x = 1,155,732,458.40 × 494,989,291.20
  4. Step 4: Simplify right side
    770,488,305.60x = 572,075,190,400,249,536
  5. Step 5: Solve for x
    x = 572,075,190,400,249,536/770,488,305.60
  6. Step 6: Final answer
    x = 742,483,936.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.