Home / 900,570,583.79-1,242,800,097.88-518,881,670.63

Finding the Fourth Proportional to 900,570,583.79, 1,242,800,097.88 and 518,881,670.63

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Solution

The fourth proportional to 900,570,583.79, 1,242,800,097.88 and 518,881,670.63 is: 716,064,018.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,570,583.79 : 1,242,800,097.88 = 518,881,670.63 : x
  2. Step 2: Convert to fraction form
    900,570,583.79/1,242,800,097.88 = 518,881,670.63/x
  3. Step 3: Cross multiply
    900,570,583.79x = 1,242,800,097.88 × 518,881,670.63
  4. Step 4: Simplify right side
    900,570,583.79x = 644,866,191,048,911,744
  5. Step 5: Solve for x
    x = 644,866,191,048,911,744/900,570,583.79
  6. Step 6: Final answer
    x = 716,064,018.37

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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.