Home / 717,109,858.48-989,598,166.14-438,630,925.36

Finding the Fourth Proportional to 717,109,858.48, 989,598,166.14 and 438,630,925.36

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Solution

The fourth proportional to 717,109,858.48, 989,598,166.14 and 438,630,925.36 is: 605,302,457.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,109,858.48 : 989,598,166.14 = 438,630,925.36 : x
  2. Step 2: Convert to fraction form
    717,109,858.48/989,598,166.14 = 438,630,925.36/x
  3. Step 3: Cross multiply
    717,109,858.48x = 989,598,166.14 × 438,630,925.36
  4. Step 4: Simplify right side
    717,109,858.48x = 434,068,359,348,547,200
  5. Step 5: Solve for x
    x = 434,068,359,348,547,200/717,109,858.48
  6. Step 6: Final answer
    x = 605,302,457.10

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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.